Gas burner



Se t. 15, 1931. c. E. METHUDY GAS BURNER Filed Dec 12.1929 2 Sheefcs-Sheet 1 Sept. 15,1931. c. E. METHUDY 1,823,460

' GAS BURNER Filed Dec. 12, 1929 2 Sheets-Sheet 2 Q W W Patented vSept. 15, 1931 UNITED STATES PATENT OFFICE CARL E. METHUDY, OF ST. LOUIS, MISSOURI, ASSIGNOR TO METHUDY AUTOMATIC LIGHTER 60., OF EAST ST. LOUIS, ILLINOIS, A CORPORATION OF ILLINOIS GAS BURNER Application filed December 12, 1929. Serial No. 413,437.

This invention relates to gas burners, and has special reference to gas burners designed and adapted for use in ovens, though no such limitation of the use of the device is intended.

An object of the invention is to provide an improved gas burner comprising a pair of spaced parallel burner tubes having numerous gas outlet openings, a communicating connection from one end of one to ,the adjacent end of the other of said tubes and having numerous gas outlet openings, and an imperforate gas supply tube opening into said spaced parallel burner tubes approximately midway between the ends thereof. An

- 16 embodiment of the invention to obtain LlllS object provides an improved gas burner including spaced parallel burner tubes and a gas supply pipe common to the tubes and communicating with the medial portions 20 thereof and spaced approximately equidistant from the burner tubes. 7

Another object of the invention is to provide a gas burner comprising a pair of spaced parallel burner tubes connected at one end for the passage of gas from one to the other and having a gas supply tube extending between said tubes and opening into their intermediate portions so that the gas supply through said tube is preheated and distributed more equally throughout the burner than occurs in burners wherein the supply pipe opens into one end of the burner.

An additional object of the invention is to provide means for supporting a burner of the type and character mentioned in ovens of difi'erent sizes so that the burner may be supported approximately midway between the side walls of the ovens.

Other objects will appear from the following description, reference being made to the accompanying drawings in which Fig.1 is a plan view of one of the horizontal sides of an. improved oven burner and the supports therefor with parts shown in section.

Fig. 2 is a plan view showing the manner in which the gas supply connection supports the burner in an oven wider than the oven having'portions of its side walls shown in Flg. 1.

tant parts of the subject-matter disclosed in said application.

The burners shown in Figs. 1 to 4, inclusive, comprise a pair of parallel spaced burner tubes 1, preferably of approximately equal length, and each having numerous gas openings 2 formed at intervals throughout the length of said tubes for the passage of gas to the ignition side of the burner. These tubes have a communicating connection 3 at one end permitting the free passage of gas from either of the tubes 1 to the other and said connection 3 has numerous gas openings 4 for the passage of gas to the ignition side of the burner. The opposite ends of the tubes 1 are shown as having integral connection comprising an inwardly extending tubular part 5 from the end of each tube 1 provided with numerous gas openings 6 to the ignition side of the burner. These extensions 5 are integrally united with a tube 7 which extends diametrically across the ends of the extensions 5 and is closed from communication with said extensions '5 by the wall of the tube 7. This tube 7 is in communication with a source of gas supply and flares to its integral union with a cross connection 8 between the medlal portions of the tubes 1 and opening into both of said tubes. The tube 7 is approximately equidistant from the two tubes 1 and the gas inlet connection 8 to the tubes 1 opens into said tubes 1 approximately midway between their ends which is approximately midway between the parts 3 and 5 of the burner. The gas inlet connection 8, as well as the tube 7, are imperforate so that the gas must pass through the openings 2, 4; and 6 for ignition.

- oppositeend of the tube of the burner.

Obviously, the tube 7 and the gas inlet connection8 are subjected to a high degree of heat supplied by the burner so that the gas is )reheated and thus made more perfectly combustible.

As shown. each tube 1 has a lateral tubular projection 9 closed at its outer end, said projections being provided throughout their length with numerous gas openings 10 permitting the passage of gas to the ignition side Th se tuluilar projections 5) are closed at their outer ends and are in axial continuation of the gas inlet connection 8 though, of course. the construction of the burner may be varied in this respect without departure from the nature and principle of the invention.

This burner has an internally threaded socket 11 integral with the end of the tube 7. This socket is designed and intended to re ceivethe end of a supply tube equipped with an air mixer at its inlet end. As shown in Fig. 1. the angular gas supply tube 12 has the end of one arm thereof screwed into the socket 11 and against an appropriate packing ring 13 to provide an impervious joint The 12 is equipped with an air mixer 13 of. familiar construction and. through which gas is discharged from a gas supply pipe leading from a manifold. not shown. At the inner end of the tube 12 the passage 14 therethrough becomes restricted and'opens into the restricted end 15 of the passage'through the tube 7 From the restricted end 15 of the passage through the tube 7. said passage 15 flares and enlarges to its opening into the tubular connection 8 Thus a. Venturi-like tube is provided between the elbow of the tube 12 and the burner.

In the embodiment shown in Fig. 1, the connection 3, constituting part of the burner. has projections 16 designed and adapted to seat upon the arms of a bracket .17 and the tube 12 has the eon a circun'iferential flange 18. The bracket 17 is supported bv supports 19 in connection with an oven wall 20. while the flange 18 is supported within an opening to the opposite oven wall 21. Thus. the bracket 17 and the flange 18 constitute means for supporting the burner midway between the walls 20 and 21. Further, the. supports 19 will cooperate equally well with brackets 17 of different lengths. so as to support the burner at different distances from the wall 20 of any oven. And a tube 12 having a longer or shorter arm may be used. 'Whcn the burner is to be supported in a narrow oven. the tube 12 will have a short arm. as shown iir Fig. 1. so as to support the adjacent end of the burner at about the same distance from the wall 21 as the opposite end of the burner is supported from the wall 20. Fig. 2 illustrates the variation in the.

cOIlStl'UCtlOIl of the tube 12 to support the burner in Ovens of greater width. As shown in said Fig. 2, an'angular tube has a long arm 22 screwed into the socket 11 of the burner, while the oppositearm, 23 of the tube is equipped with an air mixer 24-. The long arm 22 has thereon a flange 25 located in a hole in an oven wall 26 whioh corresponds to the wall 21. I

As shown in Fig. 3, a straight tube 27 is screwed-into the socket 11 of the burner and has thereon a flange--28 in an opening in the oven wall 29, corresponding to the oven walls 21 and 26. This tube 27 will support the burner in a narrow oven and is equipped on its outer end with an air mixer 30.

In Fig. 4, the tube 31 is similar to the tube 27. butv is longer and has on its outer end an air mixer 32.

Each of the air inlet tubes of Figs. 2. 3 and 4 provides a Vcnturi pipe or tube to the connection 8 of the burner. as will be clearly understood from the desrription'of Fig.1.

The burner. as shown in Fig. 5. has an air mixer 33 in direct connection with a flaring tube 34 leadingto a cross connection The tube 34 and the cross connection are prec sely similar to the tube 7, and the cross connection 8. ex epting that the air mixer 33 is on the end of the tube 34. The .arms 16 are like the arms 16 and for the same purpose.

In the modified form of the invention shown in Fig. 6. the gas inlet tube 36 corresponds to the gas inlet tubes 7 and 34 but does not intersect the cross connection 37 uniting the ends of the tubes 38 in the same manner that the opposite ends of said tubes are united by the cross connection 39. "bus. the cross connection 37 opens from each tube 38 to the other and isprg vided with numerous perforations 4-0 throughout its length permitting passage of gas to the combustion side of the burner. Thegt-ltb'e 36 opens into the tubes 38 through a cross connection 41. the walls of which are imperforate and which is similar to the cross connections 8 and 35. The end has arms 42 for cooperation with a bracket, such as the. bracket17. The end of the tube 36 s equipped with an air mixer 43;

From the foregoing. it is apparent that mv invention constitutes an improved gas burner specially designed and adaptedfor use in ovens of diflerent sizes and comprises means for'supportingthe burner in ovens of differen'. sizes. It is now clear that better combustiwi of gas is obtained than in burners in which the gas is not properly distributed or properly heated before combustion. The construction and arrangement of the device may be varied in other respects than as specifically mentioned without dcpart-ure from the nature and principle there- 39 of the burner desire to secure by Letburner tubes having numerous gas outlet openings, a communicating connection from one end of one to the adjacent end of the other of said tubes and having numerous gas outlet openings, and an imperforate gas supply tube opening into said tubes approximately midway between the ends thereof.

2. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, a communicating connection from one end of one of said tubes to the adjacent end of the other tube and having numerous gas outlet opening an imperforat-e tube forming a cross connection between medial portions of said parallel tubes and opening into both of said tubes, and an impertoratc gas supply tube extending between said first named tubes and opening into said imperforate tube forming said cross connection.

3. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, a communicating connectionfrom one end of one of said tubes to the adjacent end of the other tube and having numerous gas outlet openings,- an imperforate tube forming a cross connection between medial portions of said parallel tubes and opening into both of said tubes, an imperforate gas supply tube extending between said first named tubes and opening into said imperforate tube forming said cross connection, and a tubular projection extending laterally from each of said first named tubes and having a number of gas outlet openings.

4. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, a tubular part extending laterally from one end of eachof said tubes toward the other tube and having gas outlet openings, and an imperforate gas supply tube integrally connected with said extensions and being out of direct communication therewith and extending between'said first named tubes and opening into medial portions thereof.

A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, a tubular part extending laterally from one end of each of said tubes toward the other tube and having gas outlet openings, an imperforate gas supply tube integrally connected with said extensions and extending between said first named tubes and opening into medial portions thereof, and a communicating connection between the opposite ends of said first named tubes and having numerous gas'outlet openings.

6. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, a communicating connection from one end of one to the adjacent end of the other of said tubes and having numerous gas outlet openings, an imperforate gas supply tube opening into said tubes approximately midway between the ends thereof, and'adjustable means for supporting said burner whereby the burner may be used in ovens of different widths.

7. A gas burner comprising spared parallel burner tubes having nluuerous gas out let openings, a communicating connection from one end of one to th adjacent end of the other of said tubes and having numerous gas outlet openings, an impert'orate gas supply tube opening into said tubes approximately midway between the ends thereof, a socket in connection with the end of said tube, and a gas supply pipe screwed into said socket for supporting oneend of the burneix S. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, :1 communicating connection from one end of one to the adjacent end of the other of said tubes and having numerous gas outlet openings. an in'ipertorate gas supply tube opening into said tubes approximately midway between the ends ther of. and a tube opening into said supply tube and tapering from connection therewith toward its outer end.

9. A gas burner comprising spaced parallel burner tubes having numerous gas outlet openings, :1 comnmnicating connection from one end of one to the adjacent end of the other of said tubes and having numerous gasvoutlet openings, and an iinperforate Venturi gas supply tube opening into said tubes approximately midway between the ends thereof.

CARL E. METHUDY. 

